I've encountered an issue while attempting to test my component in Angular. The component itself functions correctly during regular use, but when I try to run the tests using "yarn run test", I receive the following error message:
HeadlessChrome 0.0.0 (Windows 10 0.0.0) DaterangepickerComponent should create FAILED
TypeError: $(...).datepicker is not a function
at DaterangepickerComponent.initializeDatepicker (./src/app/ifs/shared/daterangepicker/daterangepicker.component.ts?:70:45)
at DaterangepickerComponent.ngAfterViewInit (./src/app/ifs/shared/daterangepicker/daterangepicker.component.ts?:64:14)
at callProviderLifecycles (./node_modules/@angular/core/fesm5/core.js?:19323:18)
at callElementProvidersLifecycles (./node_modules/@angular/core/fesm5/core.js?:19297:13)
at callLifecycleHooksChildrenFirst (./node_modules/@angular/core/fesm5/core.js?:19287:29)
at checkAndUpdateView (./node_modules/@angular/core/fesm5/core.js?:20223:5)
at callWithDebugContext (./node_modules/@angular/core/fesm5/core.js?:21108:25)
at Object.debugCheckAndUpdateView [as checkAndUpdateView] (./node_modules/@angular/core/fesm5/core.js?:20786:12)
at ViewRef_.detectChanges (./node_modules/@angular/core/fesm5/core.js?:18595:22)
at ComponentFixture._tick (./node_modules/@angular/core/fesm5/testing.js?:253:32)
I'm puzzled as to why this error occurs only during testing and not in the actual application. Any insights or advice on how to resolve this issue would be greatly appreciated.
Here's a snippet of my component.spec.ts file for reference:
describe('DaterangepickerComponent', () => {
let component: DaterangepickerComponent;
let fixture: ComponentFixture<DaterangepickerComponent>;
beforeEach(async(() => {
TestBed.configureTestingModule({
declarations: [ DaterangepickerComponent ],
imports: [
// List of imports here
]
})
.compileComponents();
}));
beforeEach(() => {
fixture = TestBed.createComponent(DaterangepickerComponent);
component = fixture.componentInstance;
fixture.detectChanges();
});
it('should create', () => {
expect(component).toBeTruthy();
});
});
Below is the code for my DaterangepickerComponent which utilizes the bootstrap-datepicker library:
// Component code goes here...